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Find the area of the triangle whose vert...

Find the area of the triangle whose vertices are `A(3,-1,2),\ B(1,-1,-3)a n d\ C(4,-3,1)dot`

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To find the area of the triangle with vertices \( A(3, -1, 2) \), \( B(1, -1, -3) \), and \( C(4, -3, 1) \), we can use the formula for the area of a triangle given by the vertices in three-dimensional space. The area \( A \) can be calculated using the formula: \[ A = \frac{1}{2} \| \vec{AB} \times \vec{AC} \| \] where \( \vec{AB} \) and \( \vec{AC} \) are the vectors formed by the points \( A \), \( B \), and \( C \). ...
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RD SHARMA-VECTOR OR CROSS PRODUCT -Solved Examples And Exercises
  1. Let vec a= hat i- hat j ,\ vec b=3 hat j- hat k\ a n d\ vec c=7 hat...

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  2. Show that the area of a parallelogram having diagonals 3 hat i+ hat j-...

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  3. Find the area of the triangle whose vertices are A(3,-1,2),\ B(1,-1,-3...

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  4. If vec axx vec b= vec cxx vec d\ a n d\ vec axx vec c= vec bxx vec d...

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  5. Prove that ( vec a- vec b)xx( vec a+ vec b)=2( vec axx vec b) and inte...

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  6. If vec a= hat i+ hat j+ hat k ,\ vec c= hat j- hat k are given vecto...

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  7. If vec a= hat i+3 hat j-2 hat k\ a n d\ vec b=- hat i+3 hat k ,\ fin...

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  8. If vec a=3 hat i+4 hat j\ a n d\ vec b= hat i+ hat j+ hat k ,\ find...

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  9. If vec a=2 hat i+ hat k ,\ vec b= hat i+ hat j+ hat k , find the mag...

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  10. Find a unit vector perpendicular to both the vectors 4 hat i- hat j+3 ...

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  11. Find a unit vector perpendicular to the lane containing the vectors v...

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  12. Find the magnitude of vector vec a=(3 hat k+4 hat j)xx( hat i+ hat j-...

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  13. If vec a=4 hat i+3 hat j+ hat k\ a n d\ vec b= hat i-2 hat k\ t h e ...

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  14. If vec a=3 hat i- hat j-2 hat k\ a n d\ vec b=2 hat i+3 hat j+ hat k...

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  15. Find a vector of magnitude 49, which is perpendicular to both the v...

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  16. Find a vector whose length is 3 and which is perpendicular to the v...

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  17. Find the area of the parallelogram determined by the vectors: 2 hat i\...

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  18. Find the area of the parallelogram determined by the vectors: 2 hat i+...

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  19. Find the area of the parallelogram determined by the vectors: 3 hat i+...

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  20. Find the area of the parallelogram determined by the vectors: hat i-3...

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